Key parameters at a glance

A radius of 2.46 Earth radii
A mass of 6.60 Earth masses
Surface gravity around 1.09 g
An orbital period of 14.207 days
Semi-major axis 0.0890 AU
Distance from Earth 77.03 light-years
Earth Similarity Index 0.710
Travel time at Voyager 1 speed 1,358,508 years
Almost certainly tidally locked to its host star given the close orbit

GJ 3341 b Planet Profile

Physical Specs

Radius

2.46 R⊕

Radius (Jupiter)

0.219 R♃

Mass

6.60 M⊕

Mass (Jupiter)

0.021 M♃

Density

2.44 g/cm³

Surface Gravity

1.09 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.710

HZ Position Unknown

Controversial No

Discovery

Year 2015

Method Radial Velocity

Facility La Silla Observatory

Telescope 3.6 m ESO Telescope

Size rank in cohort

Rank by radius

#1245of 1978

top 62.9%

This planet

2.46R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-933 b 2.46 R⊕ Kepler-282 d 2.46 R⊕ TOI-5800 b 2.46 R⊕

Metric	Earth	GJ 3341 b	Jupiter
Radius (R⊕)	1.00	2.46	11.21
Mass (M⊕)	1.00	6.60	317.83
Density (g/cm³)	5.51	2.44	1.33
Surface Gravity (g)	1.00	1.09	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Minimum mass (M sin i)	6.600 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

TIC

TIC 77897915

Gaia DR2

Gaia DR2 4827532078086044416

Gaia DR3

Gaia DR3 4827532078086044416

System

GJ 3341

Percentile among Sub-Neptune cohort

Radius 2.460 R⊕ · percentile 37 / cohort 1978

Mass 6.600 M⊕ · percentile 35 / cohort 1978

Orbital period 14.21 d · percentile 49 / cohort 1946

Distance 23.62 pc · percentile 6 / cohort 1975

ESI 0.710 · percentile 93 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

14.207 days

Semi-major axis

0.0890 AU

Eccentricity

0.310

Inclination

— °

Year Length

A year here lasts approximately 14.21 Earth days (3.9% of a terrestrial year) on a highly eccentric trajectory at a mean orbital distance of 0.0890 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.710

0 = alien, 1 = Earth-identical

Insufficient insolation data. Close-orbiting tidally-locked around a cool host.

Discovery Paper

Primary reference

Astudillo Defru et al. 2015

Instrument

HARPS Spectrograph

Publication

2015-03

Observation locale

Ground

Discovery cohort

Planets confirmed in 2015 at La Silla Observatory (10 shown).

Wolf 1061 b · Rocky Terrestrial Wolf 1061 c · Super-Earth HD 1461 c · Sub-Neptune Wolf 1061 d · Sub-Neptune HD 204313 c · Neptune-like GJ 3293 c · Neptune-like GJ 3293 b · Neptune-like WASP-41 c · Gas Giant HD 175607 b · Unclassified WASP-47 c · Unclassified

Host System: GJ 3341

Spectral Class

M-type red dwarf

Effective Temperature

3,526 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

0.439 R☉

Stellar Mass

0.470 M☉

Metallicity [Fe/H]

-0.09

Extended Stellar Properties

Surface gravity (log g)

4.769 dex

Stellar density

6.494 g/cm³

Systemic radial velocity

47.80 km/s

Metallicity ratio

[Fe/H]

Distance

23.62 parsec

Light-years 77.03 ly

V-band magnitude

12.06 mag

Voyager-speed travel 1,358,508 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

42.310 mas

Total Proper Motion

553.749 mas/yr

PM Right Ascension

494.23 mas/yr

PM Declination

249.75 mas/yr

Galactic Cartesian (pc)

x = 0.164 · y = 0.839 · z = -0.519

Equatorial (J2000)

RA 78.94714° · Dec -31.29485°

Galactic ℓ, b

234.219° · -33.033°

Ecliptic λ, β

73.768° · -54.113°

HTM-20 index

-1637192984